| The Ground Source Heat Pump(GSHP) with capillary radiation air-conditioning terminal devices is a new type of air conditioning system.In this paper,combined with the actual GSHP engineering in Suzhou,to study the shallow-buried GSHP with capillary radiation air-conditioning terminal devices.According to the engineering example, the analysis of heat transfer and exergy is done.The result shows that the shallow-buried double U pipe have good heat transfer ability in the hard soil area and the capillary room can reduce the enthalpy exergy by about 25%.So the capillary can make up lack of the shallow buried pipe.According to the principle of air conditioning control,design the real-time monitoring platform and completed the installation and commissioning.The monitoring platform realize the integration of the GSHP,air handling units and the air conditioning environment, can monitor the operating conditions and energy consumption of the air conditioning system.Before the installation of monitoring platform, to test the air conditioning room for summer and winter conditions through the temperature and humidity recorder.The results showed that capillary room room is more stable and comfort than the fan coil room,but the capillary has the risk of condensation.After the installation,the monitoring showed that the supply temperature of the fresh air is stably controlled and less affected by the fluctuation of the chilled water temperature.The monitoring for the startup characteristics of the air-condition unit showed that the difference between the supply and return water reach 4 degrees.so it has enough the heat exchange ability.In December 4th, the average COP was 3.38 in the peak load period,basically reached the requirements, but was lower than the other deep buried GSHP includes the deep-buried GSHP with capillary radiation air-conditioning terminal devices. In December 8th,measured the COP were respectively 2.99,3.66,4.19 and 4.52 from 1 to 4 compressors. |
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